What is the Party Line on AV?

I've just watched Danny Alexander on BBC News, clearly stonewalling because he didn't have a clear yes or no to give to the question of whether we would be in favour of AV (in the absence of STV, obviously). If any more of our representatives are on news programmes tonight, can the party please provide them with a yes or a no on this question? I really almost don't care what the answer is, but we look absolutely pathetic if we don't know what we are thinking on one of our hobby horse subjects.